Bridgeport gets stuck on loading screen. Every other town works fine.

If playing without the mods worked, then obviously at least one of the mods conflicts. Since it doesn't effect other worlds, it might be a mod that effects vampires.

It is possible to switch between different sims 3 folders. So you could have a Sims 3 game without your current merged mod files just for playing Bridgeport. Just rename your sims 3 folders to sims3mods and sims3Bridgeport. Then rename the folder you want to play to delete the "mods" or the "Bridgeport" on end depending on which you want to play.